English to French Law/Patents Patents A method for forming a porous ceramic honeycomb article

washcoating and calcining the porous ceramic honeycomb article, wherein the porous ceramic honeycomb article

exhibits a coated microcrack parameter Nb3 < 0.14 and a coated Es000dE25.c ratio < 1.06 after washcoating and

calcining; and thermally treating the porous ceramic honeycomb article, wherein at least a first portion of the porous

ceramic honeycomb article exhibits a first treated microcrack parameter Nb3 > 0.18, and a first treated mean

coefficient of thermal expansion of less than 12x10-7/°C over a temperature range of 25°C to 800°C after the

thermal treating;